An electrical connector was developed that is tolerant of the presence of lunar dust. Novel features of the connector include the use of a permeable membrane to act both as a dust barrier and as a wiper to limit the amount of dust that makes its way into the internal chamber of the connector. The development...

Phil-Lok Fastener Most locking fastener systems use some sort of vibrationresistant method to prevent fastener loosening. The most common method is the lock washer, in use for over 100 years. Although lock washers will inhibit rotation of the nut by increasing friction, they do not provide a positive rotation stopping...

GreenKote Greenkote coating technology is a coating method for steel and other metals that can replace a range of existing coating methods. The coating is environmentally friendly, and it is applicable to a range of base materials. In the process, parts are introduced to a rotating oven, along...

A company seeks alternative methods for sawing, drilling, boring, cutting, or otherwise separating materials such as wood, metal, and composites. When compared to conventional methods, the new technology should be faster, easier, provide a cleaner cut in terms of smoothness and dust in the...

A company seeks to improve the performance properties of polyolefins, polyethylenes, and thermoplastics. Additives, ingredients, fillers, modifiers, agents, and other methods are all of interest. Properties of interest include lighter weight, higer modulus, increased tensile...

Software has been developed to implement the ICER-3D algorithm. ICER-3D effects progressive, threedimensional (3D), wavelet-based compression of hyperspectral images. If a compressed data stream is truncated, the progressive nature of the algorithm enables reconstruction of hyperspectral data at...

A context-modeling subalgorithm has been developed as part of an algorithm that effects three-dimensional (3D) wavelet-based compression of hyperspectral image data. The context-modeling subalgorithm, hereafter denoted the context modeler, provides estimates of probability...

Research has shown that including up to 5 percent w/w carbon nanofibers in a silica backbone of polymer crosslinked aerogels improves its strength, tripling compressive modulus and increasing tensile stress-at-break fivefold with no increase in density or decrease in...

A methodology (and hardware and software to implement the methodology) has been developed as a means of investigating coupling between certain rotordynamic and hydrodynamic phenomena in turbomachines. Originally, the methodology was intended for application in an investigation of coupled...

As part of the continuing efforts to develop advanced electrolytes to improve the performance of lithiumion cells, especially at low temperatures, a number of electrolyte formulations have been developed that result in improved low-temperature performance (down to –60...

This device is a biasable, submillimeter-wave, balanced mixer fabricated using JPL’s monolithic membrane process — a simplified version of planar membrane technology. The primary target application is instrumentation used for analysis of atmospheric constituents, pressure,...

Mercury discharge lamps are critical in many trapped ion frequency standard applications. An integrity monitoring system can be implemented using end-of-life signatures observed in operational mercury discharge lamps, making it possible to forecast imminent failure and to take action to mitigate the...

This week, I’m coming to you live from Anaheim, CA, and SolidWorks World 2010. The SolidWorks user community continues to flock to this annual event, and this year, there are more than 5,000 registrants learning about new features coming up in the next version of SolidWorks, as well as networking with other users, SolidWorks...

A laser tracker (LT) is an important coordinate metrology tool that uses laser interferometry to determine precise distances to objects, points, or surfaces defined by an optical reference, such as a retroreflector. A retroreflector is a precision optic consisting of three orthogonal...

A compact, reliable controller for an electrically erasable, programmable readonly memory (EEPROM) has been developed specifically for a space-flight application. The design may be adaptable to other applications in which there are requirements for reliability in general and, in particular, for prevention of...

Solid-state frequency multipliers are used to produce tunable broadband sources at millimeter and submillimeter wavelengths. The maximum power produced by a single chip is limited by the electrical breakdown of the semiconductor and by the thermal management properties of the chip. The solution is to...

A method is provided for a radiationhardened (rad-hard) solid-state drive for space mission memory applications by combining rad-hard and commercial offthe- shelf (COTS) non-volatile memories (NVMs) into a hybrid architecture. The architecture is controlled by a rad-hard ASIC (application specific integrated...

High-speed, low-power, reconfigurable electronic hardware has been developed to implement ICER-3D, an algorithm for compressing hyperspectral-image data. The algorithm and parts thereof have been the topics of several NASA Tech Briefs articles, including “Context Modeler for Wavelet...

The high-speed ring bus at the Jet Propulsion Laboratory (JPL) allows for future growth trends in spacecraft seen with future scientific missions. This innovation constitutes an enhancement of the 1393 bus as documented in the Institute of Electrical and Electronics Engineers (IEEE) 1393-1999 standard for a spaceborne...

This week’s question concerns the much-anticipated unveiling of the Apple iPad tablet computer/book reader/music, movie, and video player. At $499, Apple touts the device as a bridge between smartphones and laptops. Tech critics say it’s nothing more than a big iPhone. What...

Day two at SolidWorks World, the worldwide event for SolidWorks users, drew a record crowd. And this time it wasn’t because of the sunny Southern California weather. It was because the special guest speaker happened to be James Cameron, who just this morning was nominated for Best Director and Best Picture Academy Awards...

This week's question concerns a recent Forbes/AP story that reported on the nominees for the 2010 Nobel Peace Prize. These include a Russian human rights group, a Chinese dissident, and, believe it or not, the Internet. Proposed by the Italian version of Wired magazine, which cited...

Day one at the Medical Design & Manufacturing (MD&M) West show in Anaheim, CA was bustling with energy. Nearly everyone I spoke with said that they had found themselves happily busy throughout the day. One nice part about meeting people at trade shows is that you might come across information you would...

Another day at MD&M West has come and gone, and I'm continuing to see a lot of focus on miniaturization -- which makes sense, considering the multitude of medical applications that could benefit from compact yet efficient devices. The SQUIGGLE motor from New Scale Technologies measures 2.8 x 2.8 x 6 mm. Product...

A method of determining the radio refractivity of the atmosphere as a function of altitude involves processing of data acquired by airborne or mountain-top Global Positioning System (GPS) receivers from particular GPS satellites as those satellites rise above or fall below the horizon....

This week's question concerns the wonders and the woes of the American auto industry. With falling sales, the somewhat controversial "cash for clunkers" program, and the spate of bailouts that occurred last year for Detroit's "big three", the industry seems to be due for some...

A relatively simple thermal technique has been proposed to enable detection of bubbles of gas or bulk gas in a tube that is meant to contain a flowing liquid only. In a system in which gas cannot be tolerated, the technique could be used to trigger a shutoff valve downstream of a location...

Electrostrictive ceramic actuators that can function at low temperatures have been developed for controlling the shapes of mirrors in the Next Generation Space Telescope (NGST). On Earth, electrostrictive ceramic actuators may be useful for fine control of the positions of objects in...

This week's question concerns the ongoing debate over texting while driving. A research team at Clemson University recently developed an application called VoiceTEXT that allows drivers to speak text messages and keep their eyes on the road at the same time. Drivers using VoiceTEXT can put...

A computer program has been written as a tool for developing optical pulse-position-modulation (PPM) receivers in which photodetector outputs are fed to analog-to-digital converters (ADCs) and all subsequent signal processing is performed digitally. The program can be used, for example, to simulate an...